Air-inlet device for the manifold of an engine.



. L. H. KRBY.

'AIB INL'ET DEVICE FOR THB MANIFOLD 0F AN ENGINE.

PPLIOATION FILED AUG. 7, 191s.

Patented A111121, 1914.

lli hmmm 111111111 and gasolene will be UNITED STATES ri@LTENT oEEIcE. LEWIS H. xIREY, or KALAMAzoo, MICHIGAN. AIE-INLET DEVICE For. THEMANIEonn or AN EEGINE.

Specification of -Letters Patent.

Patented'AplnZi, 1914.

Application med August 7,1913'. serial No. 783,457. y

' To all whom t may concern Be itknown that I,LEwIs America, re-

siding at Kalamazoo, in the county of Kalal gine, of which the following isla specification, reference being had therein to the accompanying drawings. It is well known that when carbureters are set to give to internal combustion engines to which they `are attached, their highest efficiency at low speeds, rich to give the best' results at high speeds wasted'.- he object of this invention is `to a simple and efiicient device which may be readily attached to the intake manifold of an engine to provide an auxiliar supply of constructed that it may be closed atwill by the operator, and when open, will automatically operate to admit quantities of air in proportion to the speed of the engine.

bject is to the appended claims, reference being had to the accompanying drawings, in which` Figure 1 is a side elevation showing a device embodying the invention applied to the intake manifold thereof; Fig. 2, is an enlarged'section of the device em` bodying the invention, showing the same as applied to an intake-manifold of an engine; and Fig. 3 is an elevation of the same with parts broken away to show the construction. In the drawings, A represents the intake manifold of an engine and B thercarbureter which is attached to the lower end of the manifold.

. The device embodying the invention comprises a tubular nozzle 1 which is externally screwthreaded` throughout a portion of its engage a suitable screwthreaded opening inthe side of the manifold A. The

nozzle 1s provided withan enlarged head 2- suitable chamber therein for a disk valve 3 havin a hollow stem 4 slidable within an externa ly screwthreaded tubular extension formed integral with an internally H. KIRBY, a

the mixture will be too provide 1 sand is' so of an engine sciewthreaded cap 6 to engage the head 2 an y is seated upon the closed end of said nozzle at one endand at its opposite end the valve to normally hold the same to its 7 escapes from the nozzle lnto the manifold.

engagement with the nut which forms a frictional lock therefor. A series of tubes 14 are provided in the disk l0 to register with the openings 7 in the cap 6 when the disk is turned by means of a suitable rod .15 atv tached to a laterally extending arm 16 on the disk. The rotation of said disk is limited by a lug 17 thereon adapted to engage a suitable stop 18 on the cap 6.

y In operation, after the engine has attained a certainl speed,the operator will turn the disk closure 10 by means of the rod 15 to open the holes 7 in the cap 6 and permit air to enter the chamber of the head 2, thepartial vacuum created in said chamber by the 'operation of the 'engine pistons, causing the valve 3 to lift from its seat. he greater the speed of the engine, the greaterwill be thesu'ction and the farther said valve will be lifted from its seat, thus regulating the infiow of air according to the speed. In passing through the per orations 9 of the nozzle,

t e a1r 1s d1v1ded lntosmall streams which passing the nozzles on their way to the en- 1ne. g For the purpose of priming the engine in starting or for introducing a-decarbonizing fluid into the engine cylinder, the cap 13 may be removed and a suitable tubular member (not shown) screwed inl its place to conduct the fluid into the tubular member 5 from which itwill flow through the hollow what I claim iszad apted to stem 4 of the valve into the chamber of the head 2 and be drawn therefrom through the knozzle bythe action of the engine.

Obviously changes may be made inthe construction and arrangement ofl parts without departing from the spirit of my invention and I do not therefore limit myself to the particular form or arrangement shown.

Having thus fully described my invention head, a tubular stem carried by said disk valve and movably supported in the tubulareXtension of said cap, a manually controlled apertured member carried by the extension of said cap, a nut mounted upon the outer end of said extension, and means interposed between said nut and said closure member for holding said member normally against said capav 3. In an air inlet device, the combination with the manifold of an engine, of a hollow head in communication therewith, an apertured cap detachably mounted u on said head, a tubular extension carried t ereby, a yieldable valve seated against the inner side of said cap, a stem carried by said valve and 1. In an air inlet device, the combination with the manifold of an engine, of a hollow head in communication therewith, an apertured cap ycarried by said head, a tubular extension carried by saidcap, a spring pressed valve normally seated against the inner side of said ycap and provided vwith a tubular stern slidable in the tubular extension of said. cap, a manually controlled apertured closure member supported against the outer-side of said cap and upon said tubular extension, and means carried by said tubular extension for holding said member against said cap.

2. A device of the type described comprising a -hollow head, an apertured cap screwed thereon and provided with a tubular extension, a spring pressed disk valve normally seated against the inner side of said cap and be un'seated by suction in said ually controlled apertured closure member carried by said tubular extension, means upon said tubular extension for holding said closure member normally seated against the outer side of said cap, and means adapted to limit thevmovement of said closure member. In testimony whereof I aix my signature in presence of two witnesses.

' LEWIS I-I. KIRBY. Witnesses:

Lnwis E. FLANDERS, ANNA M. Donn.

movable in said tubular extension, a man-` 

